I have 2 pairs of M&S Lily slim jeans. One was bought new with tags in a charity shop about a year ago and fit well, if a wee bit short on the leg. Very comfortable. (I'm a 14 short). Bought another pair new from M&S just after Christmas. They feel so different. Longer on the ankle which isn't a bad thing, but loads roomier around the waist/hip, almost too big. Which is ridiculous as I haven't shrunk.
Have they redone their sizing or something?